The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 16, 2010
Filed:
Aug. 22, 2007
Masahiko Higasa, Fukushima-ken, JP;
Akihiro Kato, Fukushima-ken, JP;
Masao Miyaura, Fukushima-ken, JP;
Atsushi Murata, Fukushima-ken, JP;
Masahiko Higasa, Fukushima-ken, JP;
Akihiro Kato, Fukushima-ken, JP;
Masao Miyaura, Fukushima-ken, JP;
Atsushi Murata, Fukushima-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
An antenna structure includes a radiation conductor made of a metal plate that is supported by legs provided upright on a surface of a dielectric substrate and is spaced apart from the surface. The radiation conductor is circularly shaped such that the contour of the radiation conductor conforms to the outer periphery of the dielectric substrate and such that the radiation conductor includes an open portion. One of the legs functions as a feeding terminal and the other functions as a grounding terminal, whereby the radiation conductor operates as a dipole antenna. The radiation conductor has slots for adjusting impedance. Impedance can be adjusted by changing the length of the slots.